Managing the capacity of the railway network based on effective spatial and operational parameters using a service-oriented approach

Document Type : علمی - پژوهشی

Authors

1 . Ph.D Student, Faculty of Environment and Natural Resources, Department of Remote Sensing and Geographic Information systems, Science and Research Brach, Islamic Azad University, Tehran, Iran.

2 Associate Professor, Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran

3 Assistant Professor, Faculty of Environment and Natural Resources, Department of Remote Sensing and Geographic Information Systems, Science and Research Brach, Islamic Azad University, Tehran, Iran.

4 Full Professor, Faculty of Surveying Engineering, Khajeh Nasir Tousi University, Tehran, Iran.

Abstract

The capacity of passenger and goods shipment in a railway network is affected by various parameters. Considering the high cost of railway construction, optimum utilization of capacity in a railway network can help to improve the efficiency of network. Therefore, the purpose of this study is spatial calculating the capacity of railway network of Iran based on the effective parameters. In this paper using the transportation data of trains, a spatial software is developed for calculating the capacity of the railway network. Then, the outputs are compared and evaluated with the daily and real time data of the freight trains performance. In the next step, the amount of capacity utilization of each route and the amount of capacity remaining in each route and block is determined. Based on the analysis, the capacities of the selected passenger double-line route from Semnan to Shahrud, freight single-line route from Yazd to Bafgh and combination single-line route from Arak to Dorood were calculated 2.6 for Semnan to Shahrud path and 2.9 for return path, 13.6 and 12.6 (trains pair/day) respectively. Considering the common calculations, the online calculation with ability connection to related databases and the possibility of exchanging spatial web-based services with the different software, can improve the speed and accuracy of the railway network capacity calculation. On the other hand, in the equation of calculating the capacity (Scott equation) used in Iran, it is common that the adjustment coefficient of passenger train is determined by experts of transportation, while in this paper, since the data of each path is accessible, the aforementioned coefficient is calculated by the ratio of passenger trains number to their maximum number during the considered period of time. The outcome coefficient compared with the coefficient determined by experts, and the result was acceptable. Finally, with access to outputs in the GIS environment, the management solutions were proposed for optimum using the remaining capacity, enhancing the capacity in some parts of the network as well as eliminating the bottlenecks of the railway network.

Keywords

References

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Iranian Journal of Remote Sensing & GIS
Volume 11, Issue 3 - Serial Number 43
November 2020
Pages 97-112

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